On Sun, Sep 10, 2023 at 4:58 PM Conor Dooley <conor@xxxxxxxxxx> wrote: > > On Sun, Sep 10, 2023 at 04:28:54AM -0400, guoren@xxxxxxxxxx wrote: > > > Changlog: > > V11: > > - Based on Leonardo Bras's cmpxchg_small patches v5. > > - Based on Guo Ren's Optimize arch_spin_value_unlocked patch v3. > > - Remove abusing alternative framework and use jump_label instead. > > btw, I didn't say that using alternatives was the problem, it was > abusing the errata framework to perform feature detection that I had > a problem with. That's not changed in v11. I've removed errata feature detection. The only related patches are: - riscv: qspinlock: errata: Add ERRATA_THEAD_WRITE_ONCE fixup - riscv: qspinlock: errata: Enable qspinlock for T-HEAD processors Which one is your concern? Could you reply on the exact patch thread? Thx. > > A stronger forward progress guarantee is not an erratum, AFAICT. Sorry, there is no erratum of "stronger forward progress guarantee" in the V11. > > > - Introduce prefetch.w to improve T-HEAD processors' LR/SC forward progress > > guarantee. > > - Optimize qspinlock xchg_tail when NR_CPUS >= 16K. -- Best Regards Guo Ren
